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TRANSISTORS. TYPES OF TRANSISTORS PNP TRANSISTORS NPN TRANSISTORS FIELD EFFECT TRANSISTOR ( F.E.T ) UNI JUNCTION TRANSISTOR ( U.J.T ) SILICON CONTROLLED.

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Presentation on theme: "TRANSISTORS. TYPES OF TRANSISTORS PNP TRANSISTORS NPN TRANSISTORS FIELD EFFECT TRANSISTOR ( F.E.T ) UNI JUNCTION TRANSISTOR ( U.J.T ) SILICON CONTROLLED."— Presentation transcript:

1 TRANSISTORS

2 TYPES OF TRANSISTORS PNP TRANSISTORS NPN TRANSISTORS FIELD EFFECT TRANSISTOR ( F.E.T ) UNI JUNCTION TRANSISTOR ( U.J.T ) SILICON CONTROLLED RACTIFIER ( S.C.R )

3

4 CONSTRUCTION TRANISTOR IS A CONNECTION OF TWO DIODES. PNP TRANSISTOR :- N TYPE SEMI CONDUCTOR SANDWICH BETWEEN TWO P TYPE SEMI CONDUCTORS. NPN TRANSISTOR :- P TYPE SEMI CONDUCTOR SANDWICH BETWEEN TWO NTYPE SEMI CONDUCTORS. PNP & NPN TRANSISTOR HAS THREE TERMINAL ( NEXT PAGE )

5 TERMINALS NAME ARE EMITTER, BASE & COLLECTOR PNP & NPN TRANSISTOR ARE BIPOLAR TRANSISTORS (BJT) TRANSISTOR IS SEMI CONDUCTOR DEVICE TRANSISTOR MAKE FROM SILICON & GERANIUM SEMI CONDUCTOR MATERIAL

6 FIELD EFFECT TRANSISTOR F.E.T HAS THREE TERMINALS THESE TERMINAL KNOWN AS GATE,DRAIN & SOURCE. F.E.T IS UNI POLAR TRANSISTOR

7 UNI JUNCTION TRANSISTOR UJT HAS THREE TERMINALS THESE TERMINAL KNOWN AS BASE 1, BASE 2 & EMITTER U.J.T IS UNI POLAR TRANSISTOR

8 SILICON CONTROLLED RACTIFIER S.C.R HAS THREE TERMINALS THESE TERMINAL KNOWN AS ANODE, CATHODE & GATE S.C.R IS UNI POLAR TRANSISTOR.

9 WORKING OF TRANSISTOR PNP & NPN TRANSISTOR HAS TWO JUNCTION, EMITTER BASE JUNCTION & COLLECTOR BASE JUNCTION F.E.T,S.C.R,U.J.T HAS ONE JUNCTION CURRENT FLOW IN FROM ONE JUNCTION & DIRECTION

10 APPLICATION OF TRANSISTOR AMPLIFIER SWITCH CONTROLLED PROCESS

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